Determine the enthalpy and specific volume of steam at 500 kPa and a) u = 2800 kJ /kg Ans. 3060.5 kJ/kq and 0.520993 m3/kg CORDED WITH@ A rigid tank contains 10 kg of water at 90C. If 8 kg of the water is in the liquid form and the rest is\" in the vapor form, determine (a) the pressure in the tank and (b) the volume of the tank. W" 'W A rigid tank contains 50 kg of saturated liquid water at 90C. Determine the pressure in the tank and the volume of thetank. Ans. 70.183 kPa, 0.0518 m3 A pistoncylinder device contains 2 f t3 of saturated water vapor; at 50-psi pressure. Determine the temperature and the mass of the vapor inside the cylinder. Ans. 280.99 F, 0.235 lbm Determine the internal energy of water at 20 psia and 400 F. Ans. 1145.1 Btu/lbm